Recovery of phthalic anhydride

Details Recovery of phthalic anhydride Recovery of phthalic anhydride

1975-06-23

1977-02-15

Bascomb, Jr., Wilbur L.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

203 42, 203 48, 203 52, 203 70, 2603467, C07D30789

Patent

active

040082555

ABSTRACT:
Process for the recovery of phthalic anhydride in which gases as obtained in the catalytic atmospheric oxidation of o-xylene or naphthalene are treated with a hydrocarbon containing C.sub.26.sub.- paraffins, cooling, if necessary, the hydrocarbon laden with phthalic anhydride, separating the solid phthalic anhydride followed by melting and distillation thereof.

REFERENCES:
patent: 2893924 (1959-07-01), Courtier
patent: 2942005 (1960-06-01), Brown
patent: 3040060 (1962-06-01), Kulik
patent: 3187016 (1965-06-01), Brown et al.
patent: 3462461 (1969-08-01), Bloom

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